Aluminum-manganese-iron stainless steel alloy

Details Aluminum-manganese-iron stainless steel alloy Aluminum-manganese-iron stainless steel alloy

C - Chemistry, Metallurgy

22

C

75/137

C22C 38/58 (2006.01) C22C 38/04 (2006.01) C22C 38/38 (2006.01)

Patent

CA 1336141

An austenitic stainless steel alloy has a composition of about 6 to about 13 percent aluminum, about 7 to about 34 percent manganese, about 0.2 to about 2.4 percent carbon, 0.4 to about 1.3 percent silicon, about 0.5 to about 6 percent chromium, about 0.0 to about 6 percent nickel, and the balance essentially iron. The relative quantities of the foregoing elements are selected from these ranges to produce a volume percent of ferrite structure in the alloy in the range of about 1 percent to about 8 percent. The volume percent of ferrite is determined by the empirical formula 1 < VPF = 33 + 2.6(Al% ? .08) + 5.4(Si% ? .03) - 1.6(Mn% ? .16) - 8.5(C% ? .03) - 1.2(Ni% ? .15) - 4.6(Cr% ?.17) < 8

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